Toshiba satellite l300 system recovery

Hello,

I saw the other posts about recovering to the factory settings the toshiba satellite laptops, but I have an other problem to...
I borrowed the laptop from an organization which had it for two years now. The laptop was bought from some cultural project funds, used for two week and then put aside. Now I borrowed the laptop from them. The only problem is that they attached a password to it. Now after two years nobody from there can tell me the password.

I don't want to install another operating system, I just want to reset the Windows Vista home Edition to the factory settings.
Can I do that, if it has a unknown password??????